Control de culícidos con el empleo de Bacillus thuringiensis SH-14 var. israelensis en criaderos permanentes de la localidad de Fomento, provincia Sancti Spíritus, Cuba

Se realizó una evaluación ecológica de tendencia temporal retrospectiva y descriptiva del período 1999-2000, en 8 cuerpos de agua de la localidad de Fomento, provincia Sancti Spíritus. Para evaluar la efectividad y permanencia del biolarvicida, se utilizaron datos de muestreos sistemáticos y de acciones de control de los programas provinciales de vigilancia y lucha antivectorial, recogidos en los expedientes de cada criadero en la Unidad Municipal de Higiene y Epidemiología de la localidad. Se aplicaron dosis de 10 mL de ingrediente activo por metro cuadrado, alcanzándose la reducción y estabilización de los índices larvales y de adultos en cebo humano, de importantes especies vectoras de malaria, filariais, y fiebre del Nilo occidental. Se comprobó la extensión del rango de recuperación larval hasta las 3 semanas(AU)

[Use of the herbicide diquat for the control of the aquatic plant Pistia stratiotes and its importance in the control of mosquitoes (Diptera: Culicidae)]. / Utilización del herbicida Diquat para el control de la planta acuática Pistia stratiotes y su importancia en el control de los mosquitos (Dipteria: Culicidae).

The feasibility of the use of the Diquat herbicide (reglone) in the control of the Pistia stratiotes aquatic plant is tested. This facilitates the reduction of mosquito larva densities by the action of natural enemies present in the ecosystem. The associated fauna is not affected by the employed concentrations of the herbicide under these conditions.

[The presence of mosquitoes (Diptera: Culicidae) and bioregulators in existing breeding grounds in areas served by a family physician in the municipality of Fomento]. / Presencia de mosquitos (Diptera: Culicidae) y biorreguladores en criaderos existentes en áreas atendidas por el médico de la familia en el municipio Fomento.

Research was made on the presence of mosquitoes (Diptera: Culicidae) in the Fomento municipality health areas attended to by 52 family doctors, in Sancti Spíritus Province. 19 species were found. Culex quinquefasciatus and Anopheles albimanus were the most widely found. Fish and aquatic insect species serving as biological regulators were determined in each reservoir. The Gambusia punctata was the larvivorous fish most frequently found and most widely disseminated. Among predacious insects, those of the Odonata and Hemiptera orders were the most widely found.

[Presence of Tarebia granifera (Lamarck) (Mollusca: prosobranchia) in several fresh water bodies in the municipality of Sancti Spiritus]. / Presencia de Tarebia granifera (Lamarck) (mollusca: prosobranchia) en diferentes cuerpos de agua dulce del municipio Sancti Spiritus.

The distribution of T. granifera in bodies of sweet water in Sancti Spiritus municipality is studied. It was found that it is widely distributed and that it occupies very varied biotopes, except in places with a high organic contamination.